Wallenberg syndrome (lateral medullary syndrome):
1) Ipsilateral spinal trigeminal nucleus and tract injury (pain and temperature loss to face).
2) Ipsilateral inferior cerebellar peduncle (ipsilateral dysmetria).
3) Ipsilateral laryngeal/pharyngeal signs such as dysphagia, hoarseness, loss of gag reflex.
4) Contra-lateral spinothalamic tract injury (contra-lateral pain and temperature loss to body).